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Thank you for this post!
I have a 135i steptronic with a CP-e exhaust system with resonators AND stealth pipe. At 5th and 6th gear there would be some pretty loud low end cabin drone and a bit of vibration at 1500-2200rpms. Recently just installed the AR catless downpipes and it's even worse now even in 3rd gear. Hopefully these Vibrant resonators would help that....even if it's just a little bit. If not, at least it'll get rid of the rasp lol. With my BMS DCI and the turbo spooling from the downpipes, the rasp makes it sound like there's a huge exhaust leak!
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2009 BSM with Coral Red interior 135i: ///M-Sport Package // 20% tints //Cobb Protune by ProTuning Freaks// Carbon Fiber trunk lip spoiler // ADV.1 adv10 trakfunctions// H&R front and rear sway bars // Injen dual cone// CP-e full catback exhaust// AR catless downpipes // HPF FMIC // Quaife LSD // LUX Angel Eyes // Eibach Pro-Street S
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